Tunnel Supervisor Jobs (NOW HIRING)

Job Category: Operations Management

Requisition Number: MAINT001214

• Posted : August 20, 2026
• Full-Time
• On-site

Showing 1 location

Tunnel City Plant
Tomah, WI 54660, USA

Iron Oak Energy, a leading provider of proppant to the oil and gas industry with a differentiated footprint of low-cost, logistically advantaged mining and terminal assets serving all major U.S. shale basins. Iron Oak Energy Solutions, formed from the strategic combination of Covia Energy and Black Mountain Sand to create a premier frac sand mining company, delivering superior products and solutions to diversified oil and natural gas markets across North America. The combination positions Iron Oak Energy with unmatched scale, reliability, and deliverability to customers in all major oil and gas shale plays.

Iron Oak Energy is looking for a dynamic Maintenance Supervisor who will have a positive impact on the Operations team at its Tunnel City location. As a Maintenance Supervisor, you will supervise, schedule and direct maintenance personnel, coordinating with other supervisors to accomplish daily maintenance requirements for mobile equipment, stationary equipment, plant buildings and other facilities.

Key Responsibilities:

• Set high standards for workplace safety.
• Understand and enforce MSHA regulations and the Company's Corporate Safety & Health policies and procedures ensuring employees are properly trained and equipped to perform jobs in the safest manger.
• Enforce high standards for plant housekeeping.
• Direct responsibility for managing the plant maintenance function.
• Requisition parts and supplies as necessary, working with purchasing to ensure that critical spares are on hand and maintenance tasks are performed with minimal interruptions.
• Initiate programs to improve quality, eliminate waste, decrease costs and improve productivity and efficiency using continuous improvement philosophy and techniques.
• Hands on supervision and scheduling of maintenance employees to meet the demands of the plant.
• Responsible for timely completion of maintenance reporting requirements and equipment/maintenance records.
• Distribute scheduled work orders to maintenance employees with oversight of maintenance jobs from start to finish assuring quality and timely repairs are made.

Minimum Qualifications:

• Bachelor’s degree in related field preferred.
• 1-2 years of related maintenance experience preferred.
• 3-5 years of supervisory experience preferred.
• Excellent verbal and written communication skills.
• Working knowledge of Microsoft Software: Word, Excel, PowerPoint, & SharePoint.
• Experience with ERP systems, for example IFS, is preferred.
• Must be able to wear a respirator and other required personal protective equipment.
• Must have and maintain a valid driver’s license
• Excellent Healthcare Benefits - medical, vision, dental
• 401K with company matching
• Vacation + Paid Holidays
• Disability, Life / AD&D, and Long-Term Care Insurances
• Employee Assistance Program

Iron Oak Energy is committed to fostering diversity and inclusion in our workforce. We provide equal employment opportunities based on work-related factors without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, disability, or veteran status. We offer competitive salaries, advancement opportunities, and a comprehensive range of benefits.

This job description reflects the principal functions of the role and may not cover all work requirements. Additional tasks may be assigned as needed to meet exceptional conditions.

An Equal Opportunity Employer.

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor.